Thanks, david, for the clarification. Unless you tell us otherwise, PGM will leave it to the MC project to do the updating of the old templates to the new.
I'm very hesitant to introduce / support / retain informal use of the term "gateway ancestor" outside of its use by the MC project.
It seems like that term should only be used by the MC project for profiles that it has determined to actually BE gateway ancestors according to project criteria.
Otherwise, we're sending very confusing messages to viewers.